12021211120011 has 16 divisors (see below), whose sum is σ = 16971379524000. Its totient is φ = 7542606061568.

The previous prime is 12021211119937. The next prime is 12021211120013. The reversal of 12021211120011 is 11002111212021.

It is a happy number.

It is not a de Polignac number, because 12021211120011 - 2¹⁸ = 12021210857867 is a prime.

It is a super-2 number, since 2×12021211120011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12021211120013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1661755 + ... + 5177243.

It is an arithmetic number, because the mean of its divisors is an integer number (1060711220250).

Almost surely, 2^{12021211120011} is an apocalyptic number.

12021211120011 is a deficient number, since it is larger than the sum of its proper divisors (4950168403989).

12021211120011 is a wasteful number, since it uses less digits than its factorization.

12021211120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3582558.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12021211120011 its reverse (11002111212021), we get a palindrome (23023322332032).

The spelling of 12021211120011 in words is "twelve trillion, twenty-one billion, two hundred eleven million, one hundred twenty thousand, eleven".